It is possible to save a surface as an object without going through BIM Components (in version 19 at least).
The problem is I can't remember how you activate this button as it is not standard (see image below).
Maybe someone else can tell us how to activate it.
In the mean time you can use your Attribute Manager to transfer surfaces from one file to another or you can save them as AAT files that you can use in any other file.
One of the forum moderators.
Versions 6.5 to 25
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